520961117 has 2 divisors, whose sum is σ = 520961118. Its totient is φ = 520961116.

The previous prime is 520961093. The next prime is 520961123. The reversal of 520961117 is 711169025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 515698681 + 5262436 = 22709^2 + 2294^2 .

It is a cyclic number.

It is not a de Polignac number, because 520961117 - 2⁶ = 520961053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520961317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260480558 + 260480559.

It is an arithmetic number, because the mean of its divisors is an integer number (260480559).

Almost surely, 2^520961117 is an apocalyptic number.

It is an amenable number.

520961117 is a deficient number, since it is larger than the sum of its proper divisors (1).

520961117 is an equidigital number, since it uses as much as digits as its factorization.

520961117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 520961117 is about 22824.5726575548. The cubic root of 520961117 is about 804.6402811369.

The spelling of 520961117 in words is "five hundred twenty million, nine hundred sixty-one thousand, one hundred seventeen".